Implement polling and reconfirmation

This will poll the server every certain interval (15s) for the email address
and stop polling if the email is Authorized or the modal is closed or after a certain period of time (2 hours)

MAILPOET-4300

mailpoet/lib/API/JSON/v1/Settings.php

@@ -198,7 +198,7 @@ class Settings extends APIEndpoint {
   }
 
   /**
-   * Makes POST request to Bridge endpoint to add email to user email authorization list
+   * Create POST request to Bridge endpoint to add email to user email authorization list
    */
   public function authorizeSenderEmailAddress($data = []) {
     $emailAddress = $data['email'] ?? null;